Hi Larry,
I use a linear supply for mine.
My supply is actually a headphone amp supply kit from JayCar Electronics
here in Australia. Its basically two LM317's and a 7805 for 5v. I
changed the resistor that set the output voltage from 15v to 12v and
also selected an appropriate toroid transformer to suit.
Links here....
http://www.jaycar.com.au/productView.asp?ID=KC5418&CATID=25&form=CAT&SUBCATID=557
http://www.jaycar.com.au/productView.asp?ID=MT2084&CATID=19&form=CAT&SUBCATID=539
I dont know if you can get these kits in the US or if JayCar ship
internationally, you'd have to ask.
I'm sure you could find or build something similar state side :)
regards
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT
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